Messages in this thread | | | Date | Thu, 4 Sep 2003 17:49:51 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] fix remap of shared read only mappings |
| |
On Fri, 5 Sep 2003, Daniel Phillips wrote: > > This an interesting tidbit, as I'm busy working on a DFS mmap for OpenGFS, and > I want to be sure I'm implementing true-blue Posix semantics.
Please don't.
POSIX semantics are weak enough not to be interesting. Exactly because a number of old hardware platforms simply _cannot_ give you good coherency. And a number of old UNIXes couldn't either, for that matter.
What really matters is that mmap() under Linux is 100% coherent, as far as the hardware just allows. We haven't taken the easy way out. We shouldn't start now.
Linus
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |